The original closed system winching shackle mount is easy to install and can be used with steel or synthetic winch lines up to 5/16ö The rope eye is retained in the ProLink XTV with a 7/16ö-diameter grade 6AI-4V grade V titanium double-shear pin and internal snap ring for an ultra-secure connection EPDM rubber guards are attached with four barbed tips and protects fairleads and prevents rattling Can be used with 1/2ö to 5/8ö shackles and soft shackles up to 7/16ö Intended for use with winches 6,000 lbs. in capacity or less Made in the U.S.A.. WINCH LINE SHACKLE PRO GR